GMS81C2020 Datasheet, PDF (89/92 Pages) Hynix Semiconductor – CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver

Hyundai Micro Electronics
GMS81C2020/GMS81C2120
EPROM Enable Delay Time after T_HLD1
T_DLY1
200
nS
EPROM Enable Hold Time in Write Mode
T_HLD2
100
nS
EPROM Enable Delay Time after T_HLD2
T_DLY2
200
nS
CTL2,1 Setup Time after Low Address input and Data input
T_CD1
100
nS
CTL1 Setup Time before Data output in Read and Verify Mode
T_CD2
100
nS
Table 24-3 AC/DC Requirements for Program/Read Mode
START
Set VDD=V_DD1H
Set VPP=V_IHP
Report
Programming failure
NO
Verify blank
YES
First Address Location
Next address location
N=1
Report
Programming failure
EPROM Write
YES
100uS program time
NO
Verify pass
NO
Verify pass
YES
Apply 3N program cycle
NO
Last address
YES
Verify fof all address
Report
Verify failure
NO
Verify OK
YES
Report
Programming OK
VDD=VPP=0v
END
Figure 24-6 Programming Flow Chart
Nov. 1999 Ver 0.0
preliminary
89